a basic or essential attribute shared by all members of a class

having reached full natural growth or development

not yet mature

of long duration; not new

not of long duration; having just (or relatively recently) come into being or been made or acquired or discovered

(used especially of persons) having lived for a relatively long time or attained a specific age

age measured by the time (years and months) that something or someone has existed

a person's age measured by matching their bone development (as shown by X rays) with bone development of an average person of known chronological age

a measure of a child's development (in body size or motor skill or psychological function) expressed in terms of age norms

the age of an embryo counting from the time of fertilization

the level of intellectual development as measured by an intelligence test

having reached full natural growth or development

not yet mature

of long duration; not new

not of long duration; having just (or relatively recently) come into being or been made or acquired or discovered

(used especially of persons) having lived for a relatively long time or attained a specific age